In 2010, I began working with 4th-grade teacher Katie Guilbert from Bella Romero Elementary (Greeley, CO) which has a largely Hispanic student body. We used guppies to teach the scientific method–the students conducted a foraging experiment where they measured shoaling in different guppy populations. *Pictures 2010*

The following year, 4th-graders examined native and store-bought guppies and looked at their response to a visual predator cue, a picture of a pike cichlid, a common guppy predator. Each student conducted a behavioral experiment and used Excel to enter and analyze their data. They made graphs that they interpreted to make conclusions about their hypotheses. *Pictures 2011*